Emails not Getting Delivered


I have all DNS records set up but when trying to send emails via the webmail, it just doesn’t get delivered.

It is also unable to receive any emails , tested by trying to signup to youtube.

1 Like

I suppose it will be because Oracle Cloud blocks outbound connections to port 25, you can try it with this command:

apt install telnet -y
telnet gmail-smtp-in.l.google.com 25

If you see a connection timeout then Oracle is blocking port 25 and you have 2 options:

1.- Request to Oracle Cloud support to open outbound connection to port 25,465 and 587 but maybe they won’t do it, I don’t use it so don’t know their policies.

2.- Use an smtp relay, there a few out there and also some free like smtp2go or brevo but with limitations regarding the mails you can send per hour/day/month.

About not receiving mails, try to send a mail from an external account like gmail, outlook, etc. so you could see the error message. Maybe it is because your server is using a dns public resolver and exim is blocking all of them because it thinks they are included in spamhaus block list.

1 Like

I do happen to have a mailgun account , in cpanel we could edit the exim config to use the mailgun smtp for all outgoing mails, will that be possible to do here ?

And I wasn’t able to get any error when sending email via gsuite to this domain to check inbound emails.

Yes, Server settings -> Configure -> Mail Server → enable Global SMTP Relay
and fill all the fields. Remember that you should use a port not blocked by Oracle.

imagen

Regarding receiving mails, check Exim’s log /var/log/exim4/mainlog

3 Likes

By the look of it the spamhaus anti spam is doing more harm than benefit , is it possible to disable it?

2024-05-15 04:55:02 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 04:55:02 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 04:55:02 End queue run: pid=593163
2024-05-15 05:25:02 Start queue run: pid=612013
2024-05-15 05:25:02 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 05:25:02 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 05:25:02 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 05:25:02 End queue run: pid=612013
2024-05-15 05:55:02 Start queue run: pid=630298
2024-05-15 05:55:02 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 05:57:17 1s6s12-000Dsz-OX H=mx.yandex.net [77.88.21.249]: SMTP timeout after initial connection: Connection timed out
2024-05-15 05:57:17 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (110): Connection timed out H=mx.yandex.net [77.88.21.249]: SMTP timeout after initial connection
2024-05-15 05:57:17 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 05:57:17 End queue run: pid=630298
2024-05-15 06:18:08 no host name found for IP address 167.94.145.106
2024-05-15 06:18:08 TLS error on connection from (www.censys.io) [167.94.145.106] (recv): The TLS connection was non-properly terminated.
2024-05-15 06:18:20 no host name found for IP address 167.94.145.106
2024-05-15 06:18:22 no host name found for IP address 167.94.145.106
2024-05-15 06:18:22 TLS error on connection from [167.94.145.106] (gnutls_handshake): A packet with illegal or unsupported version was received.
2024-05-15 06:18:23 no host name found for IP address 167.94.145.106
2024-05-15 06:18:23 TLS error on connection from [167.94.145.106] (gnutls_handshake): A packet with illegal or unsupported version was received.
2024-05-15 06:18:24 no host name found for IP address 167.94.145.106
2024-05-15 06:18:25 TLS error on connection from [167.94.145.106] (gnutls_handshake): A packet with illegal or unsupported version was received.
2024-05-15 06:25:02 Start queue run: pid=648206
2024-05-15 06:25:02 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 06:25:02 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 06:25:02 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 06:25:02 End queue run: pid=648206
2024-05-15 06:55:02 Start queue run: pid=665231
2024-05-15 06:55:02 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 06:55:02 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 06:55:02 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 06:55:02 End queue run: pid=665231
2024-05-15 07:12:10 TLS error on connection from [171.67.70.238] (recv): The TLS connection was non-properly terminated.
2024-05-15 07:12:10 TLS error on connection from [171.67.70.238] (recv): The TLS connection was non-properly terminated.
2024-05-15 07:12:10 rejected HELO from [171.67.70.238]: syntactically invalid argument(s): (no argument given)
2024-05-15 07:12:10 rejected HELO from [171.67.70.238]: syntactically invalid argument(s): (no argument given)
2024-05-15 07:25:02 Start queue run: pid=683602
2024-05-15 07:25:02 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 07:25:02 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 07:25:02 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 07:25:02 End queue run: pid=683602
2024-05-15 07:29:13 TLS error on connection from [171.67.70.238] (recv): The TLS connection was non-properly terminated.
2024-05-15 07:29:13 rejected HELO from [171.67.70.238]: syntactically invalid argument(s): (no argument given)
2024-05-15 07:29:14 TLS error on connection from [171.67.70.238] (recv): The TLS connection was non-properly terminated.
2024-05-15 07:29:14 rejected HELO from [171.67.70.238]: syntactically invalid argument(s): (no argument given)
2024-05-15 13:40:02 Start queue run: pid=725732
2024-05-15 13:40:02 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 13:40:02 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 13:40:02 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 13:40:02 End queue run: pid=725732
2024-05-15 13:43:12 pid 139969: SIGHUP received: re-exec daemon
2024-05-15 13:43:12 exim 4.95 daemon started: pid=139969, -q30m, listening for SMTP on port 25 (IPv4) port 587 (IPv4) and for SMTPS on port 465 (IPv4)
2024-05-15 13:43:12 Start queue run: pid=728764
2024-05-15 13:43:12 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 13:43:12 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 13:43:12 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 13:43:12 End queue run: pid=728764
2024-05-15 13:45:31 pid 139969: SIGHUP received: re-exec daemon
2024-05-15 13:45:31 exim 4.95 daemon started: pid=139969, -q30m, listening for SMTP on port 25 (IPv4) port 587 (IPv4) and for SMTPS on port 465 (IPv4)
2024-05-15 13:45:31 Start queue run: pid=731890
2024-05-15 13:45:31 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 13:45:31 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 13:45:31 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 13:45:31 End queue run: pid=731890
2024-05-15 14:15:26 pid 139969: SIGHUP received: re-exec daemon
2024-05-15 14:15:26 exim 4.95 daemon started: pid=139969, -q30m, listening for SMTP on port 25 (IPv4) port 587 (IPv4) and for SMTPS on port 465 (IPv4)
2024-05-15 14:15:26 Start queue run: pid=765644
2024-05-15 14:15:26 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 14:15:26 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 14:15:26 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 14:15:26 End queue run: pid=765644
2024-05-15 14:15:27 pid 139969: SIGHUP received: re-exec daemon
2024-05-15 14:15:27 exim 4.95 daemon started: pid=139969, -q30m, listening for SMTP on port 25 (IPv4) port 587 (IPv4) and for SMTPS on port 465 (IPv4)
2024-05-15 14:15:27 Start queue run: pid=766311
2024-05-15 14:15:27 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 14:15:27 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 14:15:27 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 14:15:27 End queue run: pid=766311
2024-05-15 14:17:20 pid 139969: SIGHUP received: re-exec daemon
2024-05-15 14:17:20 exim 4.95 daemon started: pid=139969, -q30m, listening for SMTP on port 25 (IPv4) port 587 (IPv4) and for SMTPS on port 465 (IPv4)
2024-05-15 14:17:21 Start queue run: pid=770341
2024-05-15 14:17:21 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 14:17:21 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 14:17:21 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 14:17:21 End queue run: pid=770341
2024-05-15 14:25:24 exim 4.95 daemon started: pid=778020, -q30m, listening for SMTP on port 25 (IPv4) port 587 (IPv4) and for SMTPS on port 465 (IPv4)
2024-05-15 14:25:24 Start queue run: pid=778058
2024-05-15 14:25:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 14:25:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 14:25:24 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 14:25:24 End queue run: pid=778058
2024-05-15 14:55:24 Start queue run: pid=797782
2024-05-15 14:55:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 14:55:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 14:55:24 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 14:55:24 End queue run: pid=797782
2024-05-15 15:17:23 no host name found for IP address 71.6.232.26
2024-05-15 15:25:24 Start queue run: pid=825295
2024-05-15 15:25:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 15:25:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 15:25:24 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 15:25:24 End queue run: pid=825295
2024-05-15 15:55:24 Start queue run: pid=843148
2024-05-15 15:55:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 15:55:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 15:55:24 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 15:55:24 End queue run: pid=843148
2024-05-15 16:11:36 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "?", NULL)
2024-05-15 16:11:36 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "?", NULL)
2024-05-15 16:11:36 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "?\b?\035?\027?\030?\031?\v?\002\001??#???\020?<?:\bhttp/0.9\bhttp/1.0\bhttp/1.1\006spdy/1\006spdy/2\006spdy/3\002h2\003h2c\002hq?\r?\024?\022\004\003\b\004\004\001\005\003\b\005\005\001\b\006\006\001\002\001?3?&?$?\035? \203fJ\255\3525~\016\336\345{\2159w\254\177\0015\201X\242", NULL)
2024-05-15 16:11:37 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "\023\004\300+\023\003\300\256\314\023\300\254\300\021\300#?", NULL)
2024-05-15 16:11:37 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "?/?<\300\234\300\240?\234?5?=\300\235\300\241?\235?A?\272?\204?\300?\007?\004?\005\001??\305???\023?\021??\016139.177.98.159?\027???\001?\001\001\377\001?\001??", NULL)
2024-05-15 16:11:37 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "?", NULL)
2024-05-15 16:11:37 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "\300+\300\256\300\254\300#\300       \300\b?\232?\304?\210?\276?E?\237\300\243\300\237?k?9?\236\300\242\300\236?g?3?\026\001??\322???\023?\021??\016139.177.98.159?\027???\001?\001\001\377\001?\001??", NULL)
2024-05-15 16:11:37 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "?", NULL)
2024-05-15 16:11:37 SMTP call from [162.142.125.14] dropped: too many syntax or protocol errors (last command was "?", NULL)
2024-05-15 16:23:49 no host name found for IP address 154.212.141.219
2024-05-15 16:23:50 no host name found for IP address 154.212.141.219
2024-05-15 16:24:00 TLS error on connection from (mail.example.com) [154.212.141.219] (gnutls_handshake): The TLS connection was non-properly terminated.
2024-05-15 16:25:24 Start queue run: pid=861174
2024-05-15 16:25:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 16:25:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 16:25:24 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 16:25:24 End queue run: pid=861174
2024-05-15 16:30:47 1s7C8p-003cpZ-E8 <= [email protected] H=localhost (webmail.asmt.edu.np) [127.0.0.1] P=esmtpa A=dovecot_login:[email protected] S=561 [email protected]
2024-05-15 16:33:02 1s7C8p-003cpZ-E8 H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection: Connection timed out
2024-05-15 16:33:02 1s7C8p-003cpZ-E8 == [email protected] R=dnslookup T=remote_smtp defer (110): Connection timed out H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection
2024-05-15 16:44:38 H=mail-pl1-f202.google.com [209.85.214.202] X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI=mail.asmt.edu.np F=<3mJVEZgcKBQ8236t40Dv33v0t.r31ps1x2p718.ts9.24@idverification.bounces.google.com> rejected RCPT <[email protected]>: Rejected because 209.85.214.202 is in a black list at zen.spamhaus.org
2024-05-15 16:49:53 H=mail-qk1-f202.google.com [209.85.222.202] X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI=mail.asmt.edu.np F=<3mJVEZgcKBQ8236t40Dv33v0t.r31ps1x2p718.ts9.24@idverification.bounces.google.com> rejected RCPT <[email protected]>: Rejected because 209.85.222.202 is in a black list at zen.spamhaus.org
2024-05-15 16:55:24 Start queue run: pid=878787
2024-05-15 16:55:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 16:55:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 16:55:24 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 16:57:39 1s7C8p-003cpZ-E8 H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection: Connection timed out
2024-05-15 16:57:39 1s7C8p-003cpZ-E8 == [email protected] R=dnslookup T=remote_smtp defer (110): Connection timed out H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection
2024-05-15 16:57:39 End queue run: pid=878787
2024-05-15 17:07:55 H=mail-qv1-f74.google.com [209.85.219.74] X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI=mail.asmt.edu.np F=<3mJVEZgcKBQ8236t40Dv33v0t.r31ps1x2p718.ts9.24@idverification.bounces.google.com> rejected RCPT <[email protected]>: Rejected because 209.85.219.74 is in a black list at zen.spamhaus.org
2024-05-15 17:25:24 Start queue run: pid=896140
2024-05-15 17:25:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 17:25:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 17:25:24 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 17:27:39 1s7C8p-003cpZ-E8 H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection: Connection timed out
2024-05-15 17:27:39 1s7C8p-003cpZ-E8 == [email protected] R=dnslookup T=remote_smtp defer (110): Connection timed out H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection
2024-05-15 17:27:39 End queue run: pid=896140
2024-05-15 17:39:39 H=mail-qv1-f73.google.com [209.85.219.73] X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI=mail.asmt.edu.np F=<3mJVEZgcKBQ8236t40Dv33v0t.r31ps1x2p718.ts9.24@idverification.bounces.google.com> rejected RCPT <[email protected]>: Rejected because 209.85.219.73 is in a black list at zen.spamhaus.org
2024-05-15 17:40:57 H=mail-qt1-f181.google.com [209.85.160.181] X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI=mail.asmt.edu.np F=<[email protected]> rejected RCPT <[email protected]>: Rejected because 209.85.160.181 is in a black list at zen.spamhaus.org
2024-05-15 17:47:37 H=mail-pl1-f173.google.com [209.85.214.173] X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI=mail.asmt.edu.np F=<[email protected]> rejected RCPT <[email protected]>: Rejected because 209.85.214.173 is in a black list at zen.spamhaus.org
2024-05-15 17:55:24 Start queue run: pid=913208
2024-05-15 17:55:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 17:55:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 17:57:39 1s6s12-000Dsz-OX H=mx.yandex.net [77.88.21.249]: SMTP timeout after initial connection: Connection timed out
2024-05-15 17:57:39 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (110): Connection timed out H=mx.yandex.net [77.88.21.249]: SMTP timeout after initial connection
2024-05-15 17:59:54 1s7C8p-003cpZ-E8 H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection: Connection timed out
2024-05-15 17:59:54 1s7C8p-003cpZ-E8 == [email protected] R=dnslookup T=remote_smtp defer (110): Connection timed out H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection
2024-05-15 17:59:54 End queue run: pid=913208
2024-05-15 18:05:47 H=mail-pg1-f175.google.com [209.85.215.175] X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI=mail.asmt.edu.np F=<[email protected]> rejected RCPT <[email protected]>: Rejected because 209.85.215.175 is in a black list at zen.spamhaus.org
2024-05-15 18:25:24 Start queue run: pid=930615
2024-05-15 18:25:24 1s6s3a-0000eV-Dy Message is frozen
2024-05-15 18:25:24 1s6sYQ-0008MK-KP Message is frozen
2024-05-15 18:25:24 1s6s12-000Dsz-OX == [email protected] R=dnslookup T=remote_smtp defer (-54): retry time not reached for any host for 'intj.tv'
2024-05-15 18:26:08 H=mail-qk1-f202.google.com [209.85.222.202] X=TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI=mail.asmt.edu.np F=<3mJVEZgcKBQ8236t40Dv33v0t.r31ps1x2p718.ts9.24@idverification.bounces.google.com> rejected RCPT <[email protected]>: Rejected because 209.85.222.202 is in a black list at zen.spamhaus.org
2024-05-15 18:27:39 1s7C8p-003cpZ-E8 H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection: Connection timed out
2024-05-15 18:27:39 1s7C8p-003cpZ-E8 == [email protected] R=dnslookup T=remote_smtp defer (110): Connection timed out H=reception.mail-tester.com [94.23.206.89]: SMTP timeout after initial connection
2024-05-15 18:27:39 End queue run: pid=930615
2024-05-15 18:28:45 no host name found for IP address 167.94.146.49
2024-05-15 18:28:46 TLS error on connection from [167.94.146.49] (recv): The TLS connection was non-properly terminated.
2024-05-15 18:28:47 no host name found for IP address 167.94.146.49
2024-05-15 18:28:47 SMTP call from [167.94.146.49] dropped: too many syntax or protocol errors (last command was "\001??O?\005?\005\001?????", NULL)
2024-05-15 18:28:49 no host name found for IP address 167.94.146.49
2024-05-15 18:28:49 SMTP call from [167.94.146.49] dropped: too many syntax or protocol errors (last command was "?", NULL)
2024-05-15 18:28:50 no host name found for IP address 167.94.146.49
2024-05-15 18:28:50 SMTP call from [167.94.146.49] dropped: too many syntax or protocol errors (last command was "?", NULL)
2024-05-15 18:28:52 no host name found for IP address 167.94.146.49
2024-05-15 18:28:52 SMTP call from [167.94.146.49] dropped: too many syntax or protocol errors (last command was "?\b?\006?\027?\030?\031?\v?\002\001?\377\001?\001?\025\003\001?\002\002", NULL)

I did disable spam filter but still inbound emails aren’t being received , outbound is now working with mailgun.

Ok, yes, spamhaus is rejecting it because you are using a public DNS resolver like 1.1.1.1, 9.9.9.9 or whatever uses Oracle Cloud by default. The best approach should be to use another public dns resolver that si not being blocked by spamhaus like 76.76.2.0 but if you want to disable it:

1.- Edit file /etc/exim4/dnsbl.conf and remove zen.spamhaus.org
2.- Restart exim: systemctl restart exim4

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does this one has to have a user and a passwd? if yes any user can do? or has to be the admin?

You must be user root to edit the file and restart exim4.

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thank you sahsanu :slightly_smiling_face:

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i can not figure this out i also get the 550 Hello Error in which i tried this solution Can not Send email - 550 Access denied - Invalid HELO name - Vesta Control Panel - Forum but didn’t work possible reason my miss-configuration i can receive but not send i am so noob. HELP IS NEEDED :exploding_head:

I’m leaving now but I’ll contact you tonight.

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Thank very much sahsanu :pray: